Clock-alarm



(No Model.)

O. H. WOODWORTH.

OLOGK ALARM.

No. 260,514. Patented July 4, 1882,

716371196560. [aye/Zia)".

UNITED STATES PATENT OEEIcE.

ORSON H. WOODWORTH, OF COLUMBIA CITY, INDIANA.

CLOCK-ALARM.

SPECIFICATION fOrming part of Letters Patent No. 260,514, dated July 4,1882.

Application filed March 20, 1882. (No model.)

To all whom it may concern:

Be it known thatl, Onsou H. Woonwonrrr, a citizen of the United States,residing at Columbia City, in the county of Whitley and State ofIndiana, have invented a new and useful Improvement in Clock-Alarms, ofwhich the following is a specification.

My invention relates to improvements in clock-alarms, whereby they arerendered more effective in their operation, and consequently morevaluable as attachments to clocks; and the objects of my improvementsare, first, to produce a double alarm; second, to produce anintermitting alarm, and third, to produce a discordant alarm by the useof two or more bells of different tones. I attain these objects by themechanism illustrated in the accompanying drawings, in which Figure 1 isa general View of my invention with some adjacent parts; and Fig. 2 is asectional view of the double-alarm compound shaft, showing the mechanismand action of the same.

Similar letters refer to similar parts in both views.

The alarm-spring, driving-wheels, ratchet, click, upper and lowerplates, pinions, posts, and other portions are mostly omitted in thedrawings, as not forming essential features of my invention.

A and A Fig. 1, represent two similar alarm escapement-wheels, bothfirmly affixed to escapement-shaft B, as shown. Each of these wheels isdevoid of escapement-teeth nearly one-half of its circumference, as fromO to (J on each wheel.

To correspond with the two wheels two verges, D and D are firmlyfastened to the shafts E and E respectively, in the ordinary manner.These two shafts are supported at their outer ends by the upper andlower plates of the alarm, in the usual manner, but at their inner endsthey are held in position by support H, in connection with pivot T,which extends freely through shaft E, as shown in Fig. 2.

Support H is riveted to one of the posts K of the alarm, as shown at I.This support is made strong and stiff, and is firmly affixed to thepost. The extension of pivot T through the support and into the end ofshaft E is for the purpose of economizing space, so as to bring the twoverges as nearly together as practicable. This pivot fits snugly in thesupport, as well as in the inner end of shaft E,

and yet it fits loosely enough to turn freely in the support H, as wellas to permit a free movement of shaft E on its inner end, as shown.

To the shafts E and E are fastened the ordinary hammer-arms, L and Lcarrying alarmhammers M and M one or both shafts being also providedwith alarm drop-levers, N, which are applied in the usual manner, andconnect with the clock-movement by wire S.

Two alarm-bells, O and are provided, the smaller, 0, being placed in thelarger, 0 but not touching the same, the two being separated by washerP, and firmly attached to back or side of clock-frame R by means of thescrew, as illustrated. The bells are the ordinary metal alarm-bells, andare of two different sizes and tones.

Operation The alarm escapement-wheels A and A being propelled in thedirection of the arrow by the revolution of escapementshaft B, it isevident that as the toothed portion of escapementwheel A comes incontact with verge D it imparts motion to the same, and through it toits shaft E hammer-arm L and hammer M thus producing an alarm on belt 0by hammer M which alarm ceases when the toothless portion of wheel Areaches verge D but by the time this latter event occurs the toothedportion of wheelA reaches verge D, and,through its shaft E, hammer-armL, and hammer M, produces an alarm on bell O, which latter alarm ceaseswhen the toothless portion of wheel A reaches verge 1). Thus a veryeffective and unusual alarm is produceda double alarm, intermittent andalternating, first on one hell and then on the other, and then on bothbells together.

This clock-alarm need not necessarily occupy any morev space than thosenow in ordinary use, and the cost of its construction is but a few centsgreater, while in its effectiveness as an alarm it is far superior tothose of the ordinary pattern.

I claim as my invention The escapementwheels A and A having their teethcut away on a portion of their peripheries, in combination with verges Dand D shafts E and E support H, and pivot T, substantially as describedand set forth.

ORSON H. YVOODVVORTH.

Witnesses:

WM. H. MAGLEY, L. R. SHINNEMAN.

